病人突然剧烈腹痛，检查伴有膈下游离气体。可能的诊断是：
A．出血B．切口感染C．切口裂开D．肺不张E．尿路感染
参考答案：B
(2011·山东)He had his camera ready ________ he saw something that would make a good picture.
A．even if
B．if only
C．in case
D．so that
简述《三国演义》中体现关羽“勇”的一个故事。
